<div dir="ltr">Dear QE Developers,<div><br></div><div>I believe I encountered a bug in the phonon calculation. After I set the reduce_io to .true. in phonon input file, ph.x cannot find the necessary .wfc files. This error goes away if I set reduce_io back to .false..</div><div><br></div><div>Here's a snippet of the output file:</div><div><br></div><div><div> Computing dynamical matrix for</div><div><br></div><div> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%</div><div>     Error in routine openfilq (1):</div><div>     file fo75fa25.wfc not found</div><div> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%</div><div><br></div><div>     stopping ...</div><div><br></div><div>If I start with a calculation of reduce_io = .false., cancel it, and then start the same calculation with reduce_io set to .true, the error also disappears.</div><div><br></div><div>Sincerely,</div><div>Hao</div><div><br></div><div><br></div>-- <br><div class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><span style="color:rgb(0,0,0);font-size:12.8px">Hao Zeng, PhD Student</span><br></div><div dir="ltr"><div><font color="#000000">Department of Chemistry</font></div><div><span style="font-size:12.8px"><font color="#000000">The University of Chicago</font></span></div><div><span style="font-size:12.8px"><font color="#000000">Chicago, IL, USA, 60637</font></span></div></div></div></div></div></div></div></div>
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